Arcane Surge (Su): As a swift action, you can expend one use of mythic power to cast any one arcane spell without expending a prepared spell or spell slot. If you prepare spells, this spell must be one you prepared today (even if you have already cast it); if you’re a spontaneous caster, this spell must be one of your spells known. If the spell requires a saving throw, any non-mythic creatures affected by the spell roll twice and take the lower result. If you must attempt a caster level check for the spell to overcome a creature’s spell resistance, you can roll your caster level check twice and take the higher result. You can’t add a metamagic feat to a spell you cast using this ability.

Display of Intelligence As a free action, a 1st tier archmage can expend one use of mythic power to attempt a feat of Intelligence, gaining a +20 circumstance bonus on one Intelligence-based skill check or Intelligence ability check.

Spell Power A 2nd tier archmage rolls 2d20 and takes the better result for any caster level check he makes. At 4th tier, the archmage adds his tier to his caster level. At 6th tier, the archmage adds one-half his tier to the DC of any spells he casts. At 8th tier, the archmage increases any caps on his spells by an amount equal to his tier.

Mythic Intelligence A 3rd tier archmage adds his tier to all Intelligence and Intelligence based checks.

Wild Arcana (Su): At 5th tier, you can expend one use of mythic power to cast any one arcane spell without expending a prepared spell or spell slot. This requires the same action as casting the spell would normally. The spell must be on one of your arcane class spell lists and must be of a level that you can cast with that arcane spellcasting class. You don’t need to have the spell prepared, nor does it need to be on your list of spells known. If the spell requires a saving throw, any non-mythic creatures affected by the spell roll twice and take the lower result. If you must attempt a caster level check for the spell to overcome a creature’s spell resistance, you can roll your caster level check twice and take the higher result. You can apply any metamagic feats you know to this spell, but its total adjusted level can’t be greater than that of the highest-level arcane spell you can cast from that spellcasting class.

Mythic Spells A 7th tier archmage gains a pool of power equal to his tier that can be used to empower mythic spells.

Channel Power (Su): A 9th tier archmage gains the ability to channel raw arcane power into a spell. The archmage can expend one use of mythic power when casting an arcane spell to increase its damage by 50%. If the spell has a duration greater than 1 round, the duration doubles. This spell ignores any spell resistance the targets have, although targets immune to the spell or to magic still retain that protection.

True Archmage At 10th tier, whenever he casts an arcane spell that targets one or more non-mythic creatures, each of those creatures must roll any saving throws against the spell twice and take the lower result. He gains spell resistance equal to 15 plus his character level. His spell resistance can be lowered and raised as a free action at any time, allowing him to benefit from his allies’ spells.